. >>> the vatican says pope benedict xvi hit his head last year. but officials say it did not play a relevant role in his decision to resign. no one knew about the incident. the pope announced monday he is resigning at the end of the month. he is the first pope to step down in more than 600 years. >> a superde history last year in london is now a suspect in the shooting death of his model girlfriend. oscar was the first double amputee to compete in the olympic games. his girlfriend died this morning after a shooting at his south africa home. elizabeth is following the investigation for us. >> reporter: car made headlines last summer at the olympic games. now he's back in the news. this time being investigated in connection with the murder of his girlfriend. >> there was a shooting incident this morning. at this stage, a young woman did die on the scene of gunshot wounds. >> police arrested him. the first double amputee to run track in connection with the shooting death of his girlfriend model. she was shot multiple times when police arrived on the